Lay-rock-shaft bearing for looms



Fgb. s, 1927.

' A. E. DEAN ET AL LAY BOOK SHAFTBEARING FOR LOOMS Filed Nov. 14, 9 5

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MGM/w; ATTORN E Patented F eb. 8, 1927.

wes 3mm ALBERT n. DEAN AND LE BEAU enUNnY, or FALL, RIVER, MASSACHUSETTS,1AS

I a 1,617,2sa

PATENT *otFiciji;

. srenons TO DRAPER conPonA'rIon, or nornnnnn, MASSACHUSETTS, A oonronn- TION OF MAINE.

iiAY-BOCK-SHAFT BEARING non LOOMS.

Application filed November 14, 1925. Serial No. 69,060.

bearings for looms whereby the lay rock shaft is supported in proper position .for-

controlling the path of movement of the lay.

. It'is now the common practice to provide the side frames of a loom with separate hearsuch bearings are usually secured to the side frames of the loom for adjustment to take: up wear incident to the rocking movementof the lay rock shaft. v

Duringweaving, however, the lay is frequently'subjected to a thrust, usually in an upward direction, when the loom;bangsoff and such thrust is caused by the com.- bined action of the dagger when the shuttle fails to box properly and the pitman connection between the lay and crank shaf Such thrust upon the lay rock shaft frequently results in displacement of the lay rock shaft bearings, and one of the objects of the pres ent invention is to provide'a lay rock shaft bearing which will effectively withstand such thrusts to which the lay is subjected at times, without disturbing the adjusted con dition of the bearing itself.

In accordance with the present invention, the lay rock shaft bearing comprises side armsand a central bearing hub having ex tending from its upper and lower'surfaces thrust lugs of similar character which take the'thrust of the lay rock'shaft when the loom bangs-off. In the preferred form of the present-invention, the entire thrust bearing, including the thrust lugs, is formed as a single casting, and the thrust lugs themselves project from the upper and lower surfaces of the central, hub bearing at a point adjacent the connection between such bear-' ing and the side arms.

The invention and new combination of parts will best he made clear from the following description and the accompanying drawings of one good form In the drawings: Fig.1 is a'perspective view showing the parts of a loom associated with the present invention; v p Fig. 2 is a side elevation, some of'the parts being shown in section;

Fig. 3 is a front elevation with parts thereof.

' shown in section; and 7 ing the present invention.

Fig. & is an enlarged perspective detail showing the lay rock shaft bearing contain- Aslierein shown, only one. side-frame-of the loom and a single rock shaft bearing isshown, it being understood that the opposite- The side frame-1 of the loom is providedwith the usual flanges 2 and 3 and at the si'de'of the loom is similarly constructed. y

lower part of the loom frame the web con necting the flanges 2 and 3 is provided with vertical elongated opening 4 through which the lay-rock shaft 5iextends. Inside o-f'the side frames ofthe loom, the lay rockshaft 5 is provided. with the usual'lay swords 6, on theaupper portions of which thelay'is mounted, as usual, and the lay, as is common in loom constructions, is given a movement towards and from the front of the loom. The lay, ofcourse, carries the .usualshuttle boxes and dagger knock-off, which features, however, form nopart of the present inven tion, and as they are now wellnnderstood in the art illustration thereof seems unnechub 11 which is of less cross-sectional di-Q mensionthan the elongated opening 41in the side frame of theloom, and,asshown,, the

central-bearing hub 11 ext-ends through the elongated opening 4 and is secured in place; as above indicated by the securing bolts 10.

The, central bearing hub 11 is provided with a. bushing 12 through which iextends thev lay rockshaft 5, as shown in Fig. 3. It is usual to mountupon the end of the lay rock shaft :5the picker stick support or bearing 13, Fig. 1, on which the picker stick. ll is mounted, but as such features form no part of the present.invention, further description is unnecessary.

It is frequently desirable to adjust the lay rock shaft bearing,especially whenthe parts become worn,in order that the'lay rock shaft itself may be given its proper position to like cause the lay to move in the desired path.

' To this end the side frames of the loom. are

provided with the 7 vertical openings 15, which cross the openings 9 in the side arms when the parts are assembled as indicated at 16," Fig. 2. The vertical slots 15 are provided to'permit the lay rocker shaft bearings carrying the central bearing hub 11 to be adjusted vertically while the horizontally extending slots are provided to accommodate a horizontal adjustment of the lay rocker shaft bearing.

As shown in the present instance of the invention, the side surface portions of the central bearing hub 11 are flattened or out away,;as at 17, thereby permitting lateral adjustment of the hearing when necessary, and since the vertical dimension of the central bearing hub is less than the elongated opening a in the side frame of the loom, provision is made for vertical adjustment of the lay rock shaft bearing. 7

In accordance with the present invention, the central bearing hub is provided with oppositely extending, integral thrust lugs or projections which extend into the elongated opening 1 in the side frame of the loom and one of which lugs bears upon the upper surface of such opening, thereby taking up any thrust in an upward direction which may be exerted upon the bearing at times, as when the loom bangs-off. i 1

As more particularly indicated in Fig. 4;, the central bearing hub 11 has a thrust lug or projection 18 extending upwardly from its upper surface, and a similar thrust lug 19 at its lower surface.

The two thrust lugs 18 and 19 do not extend about the central bearing hub but project only from the upper and lower surfaces thereof, and each of said thrustlugs is formed integral with the side arms 8 and the central bearing hub 11 and tapers from the axis of the central bearing hub 11. In the present instance, each of the thrust lugs 18 and 19 is provided with inclined surfaces 20. and 21. g

'When the lay rock shaft bearing is in operative position, as indicated in Figs. 1, 2 and 3, the top edge portion of the upper thrust lug 18 rests against the upper surface of the elongated opening 4: formed in the side frame of the loom, with the result that should the lay impart an upward lifting or thrust action upon the lay rock shaft, as when the loom bangs-off, such thrust will be taken up by the upper thrust lug 18 without disturbing the adjustment of the layv rock shaft bearing on the loom frame. By making the thrust lugs 18 and 19 of similar form and size, the lay rock shaft bearing as a whole is made reversible; that is, the lay rock shaftv bearing, as indicated in Fig. l, may be applied to the loom frame and to the lay rock shaft with either the thrust lug 18 or the thrust lug 19 in upper position to bear against the upper surface of the elongated opening 4 in the loom frame.

Since the horizontal dimension of the central bearing hub 11 is less than the corresponding dimension of the opening 42in the loom frame, the lay rock shaft bearing may be adjusted laterally. vVh'einliowever, the lay rock shaftjbearing or the lay rock shaft itself becomes'worn, and vertical adjustment of the lay rock shaft bearing is desired, the upper thrust lug '18 in the present showing, may have its upper edge portion trimmed off or filed to provide the necessary I upward adjustment of the lay rock shaft bearing.

In assembling the parts, the central hearing hub 11 of the lay rock shaft bearing is extended through the elongated opening 4L in the side frame, with the top edge of the, thrust lug then in upper position bearing. against the upper surface of the opening 4..

The lay rock shaft bearing is then secured in position by the usual securing bolts 10, so that on the occurrence of an upward thrust to the lay rock shaft occasioned by a bangofi of the loom, the upper thrust lug will absorb the disturbing force and prevent dis- 7 to prevent displacement of the lay rock shaft bearing and, consequently, the lay, whenever a bang-off or other upward thrust occurs.

What is claimed is v 1. In a loom, the combination of the side frame having an opening to receive the hub of a lay rocker shaft bearing, a lay rocker shaft bearing having a central bearing hub adapted to be mounted in said opening and having oppositely extending arms adapted to be secured to the side frame in different positions of adjustment, a lay rocker shaft journaled in the hub, and integral thrust lugs projecting at the top and bottom of the bearing hub within said opening and formed so that when either side of the hub is turned upward one of the lugs will abut against the upper inner wall of the opening to receive the vertical thrust exerted upon the lay rocker shaft when the loom bangs off.

2. In a loom, thecombination of the side frame having an opening ,to receive the hub of a lay rocker shaftbearing, a lay rocker.

shaft bearing having a central bearing hub adapted to be mounted in said opening and having oppositely extending armsadapted to be secured to the side frame in difi'erent positions of adjustment, aolay rockerrshaft journaled in the hub, an integral thrust lug bearing hub within said opening to abut against the upper Wall of said opening to receive the vertical thrust exerted upon the lay rocker shaft, and the lug being formed With a narrow bearing edge that may be readily cut away to facilitate vertical adjustment of the hub.

8. A lay rocker shaft bearing formed as a single casting and comprising a central bearing hub having oppositely extending side arms adapted to be clamped to the side frame of a loom in different positions of adjustment, and the central bearing hub being provided at its top and bottom with integral thrust lugs adjacent the side arms and Which have narrow bearing edges that may be readily cut away to facilitate vertical adj justment of the hub upon the 100111 frame.

In testimony whereof, We have names to this specification.

ALBERT. E. DEAN. LE'BEAU GRUNDY.

signed our 

